world.json

{
    "random": false,
    "static": [
        {
            "type": "sphere",
            "center": {
                "x": 0,
                "y": -100.5,
                "z": -1
            },
            "radius": 100,
            "mat": {
                "type": "lambertian",
                "albedo": {
                    "x": 0.8,
                    "y": 0.8,
                    "z": 0
                }
            }
        },
        {
            "type": "sphere",
            "center": {
                "x": 0,
                "y": 0,
                "z": -1
            },
            "radius": 0.5,
            "mat": {
                "type": "lambertian",
                "albedo": {
                    "x": 0.1,
                    "y": 0.2,
                    "z": 0.5
                }
            }
        },
        {
            "type": "sphere",
            "center": {
                "x": 1,
                "y": 0,
                "z": -1
            },
            "radius": 0.5,
            "mat": {
                "type": "metal",
                "albedo": {
                    "x": 0.8,
                    "y": 0.6,
                    "z": 0.2
                },
                "fuzz": 0
            }
        },
        {
            "type": "sphere",
            "center": {
                "x": -1,
                "y": 0,
                "z": -1
            },
            "radius": 0.5,
            "mat": {
                "type": "dielectric",
                "refindex": 1.5
            }
        }
    ]
}